Butyrometer



June 5, 1945.`

BUTYROMETER Filed Jan. 6, 1943 nvr/v5.56.- I

Patented June 5, 1945 UNITED STATES PATENT oFFlcEj BU'rYaoME'rER `All?Lennart Stgen, Stockholm, Sweden, assignor f to AktiebolagetSeparatonStockholm, Sweden,

a corporation of Sweden Application January 6, 1943, Serial No.` 471,447v In Sweden January 8, 1942 l 2 Claims. (Cl. 73-427) Butyrometers, usedfor ascertaining the fat content of, for example, milk or cream,comprise a containerhaving a wider body portion, open I at the bottom,and a narrower portion in the form of a long neck, the latter beingprovided with a scale on which the length of a fat column formed duringthe test is read off. Such butyrometers are provided with a capillaryopening at the junction of the body and neck. To lill the butyrometer itis held in such position that `the body is above the neck, and thesample to be tested and the reaction agent are poured into theopenbottom of the butyrometer. During filling, the opening is closed byputting a finger over the open end of the neck. The liquid running fromthe stand.

According` to the present invention the objections above `recited areavoided by constructing the butyrometer `with a wide body open at itslower end and a narrow neck open at itslupper end and providing aprojection on the body relatively` near the neck having a throughpassage open to the interior of the body and constricted I to formacapillary opening, in combination with a single member providing meansfor closing both with the neck 4. The wider body 4portion is, in i theusual way, closed by a rubber stopper 5. The capillary opening 3 isclosed by means of a rubber cap 6 tted over the tube 2. The orificeofthe tubular neck 4 is in similar manner closed by another rubber capl. l

In Fig. 2 is shown a stand II of, for example,

.vulcanized rubber, on which is placed,` upside down, in position foriilling, a butyrometer like` that shown in Fig. 1. The stand is providedwith a recess I2 for the tubeZ and with a recess I3 for the neck 4;Thereby the butyrometer is held fixedly in the stand. The horizontaldistances between the recesses I2 and I3 should equal the horizontaldistances between the neck 4 and tube2, and the diameter of the`recesses I'2 and` I3 should correspond to the outer diame- I ters ofthe neck 4 and tube 2 so that a tight connection is established.

What I claim and desire to protect by Letters Patent is:

,1. A butyrometer comprising` a relatively wide I body having an openlower end and a relatively narrowneck communicating with the interior ofthe body and open at its upper end, a projection on the body relativelynear the neck having a through passage constantly open to the interiorof the body and constricted to form` a v capillary opening, a` singlemember providing re` movable means forclosing both the upper end` of theneck and the outer end of the passage theupper end of the neck and theouter end of i the said passage while the butyrometer, in reversedposition, is being filled, and aclosure for closing the lower end of thebody before `the bu- `tyrometer is restored to uprightposition.Preferably, the said projection is in the form of a tube whose outer endextends in substantial parallelism with the neck, while the closingmeans,

`when the butyrometer is inreversed position while being lled, is astand having two open-top holes having flexible Wallsand spaced apart adistance corresponding to the horizontal distance between the neck andtube, the holes being at relative levels corresponding to the relative`levels of the upper ends of the neck `and tube.

In the accompanying drawing, Fig. 1 is a longitudinal sectional view ofthe butyrometer.Y

in upright position and Fig. 2 is asimilar view of the butyrometer, inreversed position lfor lilling, applied to the stand for closing theneck and tube.

In the butyrometer shown in Fig. 1, thelbody I, which is made of glass,is providedwith a` projection 2, in theform of a cylindrical tube orspout, having a capillary opening 3. `The general direction of extensionof the tube is parallel in the projection WhileV the butyrometer, in"reversed position, is being 1led,-and a closure for `closing the lowerend of the body before the same is restored to upright position.

2. A butyrometer comprising a relatively wide I body having an openlower end and a relatively g narrow neck communicating with the interiorof the body and open at its upper end, a proj'ec- I i 40 tion on thebody relatively near the neck hav-A ing a through passage constantlyopen to the interior ofthe body and constricted to forma capillaryopening, said projection being in the form of a tube whose outer endextends in substantial parallelism with the neck, means `for `closingtheupper end of the neck and the outer end of the passage in theprojection while the butyrometer, in reversed position, is being filled,said means comprising a stand having two opentop holes whose diametersapproximate respectively the diameters of said neck and tube, said holeshaving flexible walls and being spaced apart a distance corresponding tothe horizontal distance between said neck and tube, the holes being atrelative levels approximating the relative` levels of the upper ends ofsaid neck and tube, and a closure for closing the lower end of,"

the body before the same is restored,` to upright position.

, ALF1 LENNARIT STIGEN. I

